/* ============================================================
   CASCADE PIXEL — BASE
   base.css · Reset, fonts, body chrome, nav, global utilities
   ============================================================ */

/* ── FONT REGISTRATIONS ──────────────────────────────────── */

@font-face {
  font-family: 'Archivo';
  src: url('../assets/fonts/Archivo/Archivo-VariableFont_wdth,wght.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../assets/fonts/Inter/Inter_18pt-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../assets/fonts/Inter/Inter_18pt-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../assets/fonts/Inter/Inter_18pt-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../assets/fonts/Inter/Inter_18pt-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('../assets/fonts/JetBrainsMono/JetBrainsMono-Variable.woff2') format('woff2');
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

/* ── RESET ────────────────────────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--cp-bone);
  background-color: var(--cp-substrate);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

/* ── TYPOGRAPHY DEFAULTS ────────────────────────────────────
   Archivo Bold / uppercase / tracked = display layer
   Inter = body layer
   Space Mono = metadata / mono layer
─────────────────────────────────────────────────────────────*/

.t-display {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--track-display);
  line-height: 0.95;
}

.t-label {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: var(--track-label);
  color: var(--cp-mid-1);
}

.t-mono {
  font-family: var(--font-mono);
  font-size: var(--text-mono);
  letter-spacing: var(--track-mono);
  color: var(--cp-mid-2);
}

.t-body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.65;
  color: var(--cp-mid-1);
}

.t-body-lg {
  font-family: var(--font-body);
  font-size: var(--text-body-lg);
  line-height: 1.55;
}

/* ── GRADIENT TEXT UTILITY ─────────────────────────────────  */

.gradient-text {
  background: var(--cp-gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ── LAYOUT CONTAINER ──────────────────────────────────────  */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ── NAVIGATION ─────────────────────────────────────────────
   Fixed. Bone white field with blur. Adds border on scroll.
   Bone bg so it reads on the hero's white field without flash.
─────────────────────────────────────────────────────────────*/

.cp-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  background: rgba(244,245,241,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out-expo),
              padding var(--dur-base) var(--ease-out-expo);
}

.cp-nav.scrolled {
  padding: 14px 0;
  border-bottom-color: var(--cp-line);
}

.cp-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-32);
}

.cp-nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  flex-shrink: 0;
}

.cp-nav__logo-mark {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.cp-nav__wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cp-substrate);
}

.cp-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-40);
}

.cp-nav__link {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--cp-substrate);
  transition: color var(--dur-fast) var(--ease-out-expo);
}

.cp-nav__link:hover {
  color: var(--cp-cobalt);
}

.cp-nav__cta {
  font-family: var(--font-mono);
  font-size: var(--text-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--track-label);
  padding: 10px 20px;
  background: var(--cp-gradient);
  color: var(--cp-substrate);
  border-radius: var(--radius);
  transition: box-shadow var(--dur-base) var(--ease-out-expo),
              opacity var(--dur-fast) var(--ease-out-expo);
}

.cp-nav__cta:hover {
  box-shadow: var(--shadow-teal);
  opacity: 0.92;
}

/* ── FOCUS RING (WCAG AA) ───────────────────────────────────  */

:focus-visible {
  outline: 2px solid var(--cp-teal);
  outline-offset: 3px;
}

/* ── SCROLL REVEAL SYSTEM ───────────────────────────────────
   Elements start hidden. JS adds .revealed via IntersectionObserver.
   Cascading stagger via --reveal-delay custom property.
─────────────────────────────────────────────────────────────*/

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease-out-expo),
              transform var(--dur-slow) var(--ease-out-expo);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}


/* ── SECTION LABEL ──────────────────────────────────────────  */

.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-bottom: var(--space-48);
}

.section-label__bar {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--cp-gradient-horizontal);
  flex-shrink: 0;
}

.section-label__text {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: var(--track-label);
  color: var(--cp-mid-1);
}

/* ── CTA BUTTONS ────────────────────────────────────────────  */

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  padding: 16px 32px;
  /*
    Phase 2C: extended 5-stop gradient (cobalt → teal → lime → teal → cobalt)
    at 200% background-size. background-position drifts on a 5s loop, creating
    a slow persistent colour-cycling pulse. Fallback: static gradient via
    prefers-reduced-motion (below).
  */
  background: linear-gradient(90deg, #1E5DD8 0%, #2BC7B0 25%, #C8E83A 50%, #2BC7B0 75%, #1E5DD8 100%);
  background-size: 200% 100%;
  animation: btn-gradient-drift 5s ease-in-out infinite;
  color: var(--cp-substrate);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--track-label);
  border-radius: var(--radius);
  transition: box-shadow var(--dur-base) var(--ease-out-expo),
              opacity var(--dur-fast) var(--ease-out-expo);
}

@keyframes btn-gradient-drift {
  0%   { background-position: 0% center; }
  50%  { background-position: 100% center; }
  100% { background-position: 0% center; }
}

.btn-primary:hover {
  box-shadow: var(--shadow-teal);
  opacity: 0.92;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  padding: 14px 28px;
  border: 1px solid var(--cp-glass-border);
  color: var(--cp-bone);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: var(--track-label);
  border-radius: var(--radius);
  transition: border-color var(--dur-base) var(--ease-out-expo),
              color var(--dur-fast) var(--ease-out-expo);
}

.btn-ghost:hover {
  border-color: var(--cp-teal);
  color: var(--cp-teal);
}

/* Ghost button on bone/light backgrounds */
.btn-ghost--on-bone {
  border-color: rgba(10,14,18,0.18);
  color: var(--cp-substrate);
}

.btn-ghost--on-bone:hover {
  border-color: var(--cp-teal);
  color: var(--cp-teal);
}

/* ── SKIP LINK (accessibility) ──────────────────────────────  */

.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  padding: 8px 16px;
  background: var(--cp-substrate);
  color: var(--cp-teal);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  z-index: 999;
  transition: top var(--dur-fast);
}

.skip-link:focus {
  top: 0;
}

/* ── MOBILE NAV HIDE ────────────────────────────────────────  */

@media (max-width: 767px) {
  .cp-nav__links {
    display: none;
  }
  .cp-nav__cta {
    display: none;
  }
}